Hi everyone, My site has been troublesome since migrating from VB4 in May. Recently it's got a lot worse. Currently averaging 60-80 users online at a time (mostly "guests"/bots lately), forum site is 350,000 posts /28,000 threads. Running latest version of XF and disabled all plugins, yet almost nightly (when nobody's online really) the server crashes for reasons I can't figure out. Usually I can fix it in the morning by REPAIR TABLE XF_SESSION Here's what I spotted in admin panel the last couple of nights: I ran the MySQL Optimize script and here's what the output said, maybe someone can help with this: Should I make the changes it says? I'm new to most of this and have been trying hard to make sense of this. Searching got me this far and I've been able to fix it each time, just running out of patience.